Journal article
Experimental exposure of farmed mink (Neovison vison) to livestock-associated methicillin-resistant Staphylococcus aureus contaminated feed
Diagnostic & Development, Division for Diagnostics & Scientific Advice, National Veterinary Institute, Technical University of Denmark1
Bacteriology & Parasitology, Division for Diagnostics & Scientific Advice, National Veterinary Institute, Technical University of Denmark2
National Veterinary Institute, Technical University of Denmark3
National Veterinary Institute4
Livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) is widely distributed in the Danish pig production. Spillover to the mink production is hypothesized to occur via contaminated pig by-products used in the production of mink feed. The aim of the present longitudinal experimental cohort study was to confirm the potential of LA-MRSA being transmitted to naïve mink after exposure to contaminated feed, and to study the persistence of the bacterium on the animals after ceased exposure to contaminated feed.
LA-MRSA-negative mink (n = 28) were housed in pairs in 14 mesh cages. Twenty-four mink (12 cages) received around 5.1 × 10 8 cfu/mink in the feed for five days, while four mink (two cages) were kept as negative controls and fed with LA-MRSA negative feed. Twenty-four hours after initiation of spike, all 28 min. were tested LA-MRSA-positive by paw swabs.
After cease of the spiking period, one mink per cage were moved to a clean housing facility to study the potential effect of environmental contamination in persistence of the LA-MRSA. All mink were re-tested three times per week for the subsequent 26 days to study whether the mink cleared off the bacterium.
The results showed that LA-MRSA can be transmitted to paws and pharynx on mink after exposure to contaminated feed and that LA-MRSA may spread indirectly through contaminated environmental sites. Mink tend to clear off LA-MRSA, however, the bacterium may persist on mink for more than 26 days.
Language: | English |
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Year: | 2019 |
Pages: | 45-47 |
ISSN: | 03781135 and 18732542 |
Types: | Journal article |
DOI: | 10.1016/j.vetmic.2019.02.033 |
ORCIDs: | Fertner, Mette Ely and Chriél, Mariann |